Enum Ownership 

pub enum Ownership {
    Shared,
    Exclusive {
        strength: i32,
    },
}

DDS 2.2.3.9 OWNERSHIP

Support status / known limitation

RustDDS uses OWNERSHIP only for matching: a Shared endpoint and an Exclusive endpoint are incompatible (INCOMPATIBLE_QOS), while the strength value does not affect matching (it is a writer-only policy, DDS spec v1.4 §2.2.3.10).

RustDDS does not implement EXCLUSIVE-ownership delivery filtering. When several EXCLUSIVE writers publish to the same instance, a correct implementation would deliver only the samples of the highest-strength live writer (with owner hand-off on liveliness loss / unregister). RustDDS instead delivers samples from all matched writers. Consequently a reader sees data from every EXCLUSIVE writer regardless of strength.

This surfaces in the dds-rtps interoperability suite as the single failing ownership case Test_Ownership_3 (two same-instance EXCLUSIVE writers, expected RECEIVING_FROM_ONE, RustDDS yields RECEIVING_FROM_BOTH). All other ownership cases pass. Implementing per-instance owner tracking would remove this limitation.

Variants

Shared

Exclusive

Fields

strength: i32

Trait Implementations

impl Clone for Ownership

fn clone(&self) -> Ownership

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Ownership

impl Debug for Ownership

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Ownership

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Ownership

impl Hash for Ownership

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Ownership

fn eq(&self, other: &Ownership) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for Ownership

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Ownership